Yes. SIFAS my beloved... I miss you...
I used to play Love Live School Idol Festival All Stars (or SIFAS) daily, sometimes I'd try and get high scores in events, sometimes I'd do the PVP (sorta) mode and play it with friends, I invested a comfortable amount because they had a monthly membership sort of system and I got a lot out of it. But the servers went offline earlier this year and it's no longer playable.
Besides SIFAS, I've played School Idol Festival (which is also offline now), BanG Dream! (in both English and Japanese), Project Sekai, Idolmaster Cinderella Girls Starlight Stage (only in Japanese), D4DJ, and a lot more typical stuff. Pokemon Go, Super Auto Pets, Fallout Shelter, Meow Tower, Geometry Dash, Zball, Tetris, and Color Switch. Though there might be a few others I don't remember. On that topic...
Have you ever invested in a gacha game?